x402 merchant
e-invoice-validator$0.01 / calleinvoice.alexhub.uk ↗
E-invoiceE-facturaPeppolVatCompliance

Check a Romanian e-Factura (UBL 2.1, CIUS-RO 1.0.9) before uploading it to ANAF SPV, and get the exact fix for every error: plain-English explanation, the official Romanian rule text, the UBL path of the field and, for amount errors, the correct value computed from the invoice (chained, so following the report gives a consistent invoice). Also validates Peppol BIS Billing 3.0 and EN 16931. No account: $0.01 per invoice via x402, plus a small free tier.

MerchantReport

0x53d9…84ce

0x53d9230a66deb679be95716b4ee539f68ace84ceExplorer
$0.01
Received
$0.00
Paid out
1
Settlements
1
Distinct counterparties
Over the whole indexed history

Received $0.01 of the $847.18M Roundhouse has indexed across 1,330,843 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (1)

Activity

MayJunJulAugSepOct
LessMore

One square per day; click a day to see its settlements in the ledger.

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0x0087…b697$0.00$0.0113h agoGraph

Ranked by settled amount over this wallet's recent settlement window — who it normally transacts with.

Data quality

100% of observed volume is with a single counterparty; all observed volume is with one counterparty, in all 1 observed settlement.

Organic volume $0.01 of $0.01 total.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0x0087…b6970x53d9…84ceBase$0.01100%coinbase3h ago0x4b0857…796c6f

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0x53d9…84ce's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0x53d9230a66deb679be95716b4ee539f68ace84ce

Open skill.md
Show the prompt
Using Roundhouse, tell me whether this x402 merchant is worth paying: how many distinct
agents have paid it, how recently, and for what.

  Merchant wallet: 0x53d9230a66deb679be95716b4ee539f68ace84ce

curl -s 'https://api.roundhouseai.io/v0/merchants/0x53d9230a66deb679be95716b4ee539f68ace84ce'
curl -s 'https://api.roundhouseai.io/v0/entities/0x53d9230a66deb679be95716b4ee539f68ace84ce/settlements?limit=50'

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.